C# tutorial- Expressions and Operators

C# Expressions and Operators



The ability of a programming language to perform calculations or operations is perhaps the most important one. To do operations on values, operators are needed.

-Assignment operator (=)


Assignment operator is used to assign a value to a variable;
int x;
int y;
x=10;
y=x;

-Arithmetic operators (+, -,*, /, %)

Arithmetic operators are used to perform arithmetic operations on variables.

Sign

Meaning

+

Addition

-

Subtraction

*

Multiplication

/

Division

%

Division of modulus

int x;
int y;
int z;
int a;
int m;
x=10;
z=y+x;
a=z-(y=5);
m=a%y;

-Compound assignation operator (+=, -=, *=, /=, %=, <<=, >>=, &=, |=, ^=)

Compound assignation operator is used to perform operations (+, -, *, /,…) on variables with assignment operation.

Operator

Example

Equal to

+=

i+=1

i=i+1

-=

i-=1

i=i-1

*=

i*=2

i=i*2

/=

i/=2

i=i/2

%=

i%=2

i=i%2

<<=

i<<=2

i=i<<2

>>=

i>>=2

i=i>>2

&=

x&=3

x=x&3

|=

x|=y

x=x|y

^=

x^=y

x=x^y


-Comparison Operators (==, >, <, >=, <=,!=)

Comparison operators are used to compare variables. They return a Boolean value (true or false).

Operator

Meaning

Example

==

Equal to

(x==y)

Greater than

(x>y)

Less than

(x<y)

>=

Greater than or equal

(x>=y)

<=

Less than or equal

(x<=y)

!=

Not equal to

(x!=10)&&(y!=10)

 

-Increment and Decrement operators (++, --, ++, --)

These operators are used to make increment or decrement on a variable.

Operator

Example

Equal to

++

x=++i

x=i+1

i=i+1

--

x=--i

x=i-1

i=i-1

++

x=i++

x=I

i=i+1

--

x=i--

x=I

i=i-1

-Logical Operators (&&, ||, !)

Logical operators are used to evaluate two expressions and return one result.

Operator

Meaning

Example

&&

And

(x>y)&&(y<z)

||

Or

(x>y)||(x<3)

!

Not

!(x==y)

-Bitwise operators (~, |, &, <<, >>, ^)

Bitwise operators are used to modify bits that represent the values that they store.

Operator

Meaning

Example

~

Reverse bits

x=~2 (result: x=-3)

|

Or

y=2|3(result: y=3)

&

And

y=2&3(result: y=2)

<< 

Shift bits to the left

y=5<<2 (result: y=20)

>> 

Shift bits to the right

y=5>>2(result: y=1)

^

Excusive Or(XOR)

y=2^3(result: y=1)






Comments

Name:
Comment:
Enter the text:
CAPTCHA image

....................................................................................................................Home | Forum | About | Contact
This website intents to provide free and high quality tutorials, examples, exercises and solutions, questions and answers of programming and scripting languages:
C, C++, C#, Java, VB.NET, Python, VBA,PHP & Mysql, SQL, JSP, ASP.NET,HTML, CSS, JQuery, JavaScript and other applications such as MS Excel, MS Access, and MS Word. However, we don't guarantee all things of the web are accurate. If you find any error, please report it then we will take actions to correct it as soon as possible.
Copyright @ 2011-2013 worldbestlearningcenter. All Rights Reserved.
Home Programming Web DB & App Questions Exercises Tips Programs FAQs Download About
Computer-Wbest
Popular Pages
You might like